Question

For a hypermetropic person, near point is shifted to 50 cm. What is the focal length of corrective lens? (Near point for normal

human eye is 25 cm)
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Answer 1

Answer:

The near point of a hypermetropic person is 50 cm from the eye. What is the power of the lens required to enable the person to read clearly a book held at 25 cm from the eye? Focal length, f = ? Hence, the corrective lens is convex because, power of the lens is positive.

Explanation:

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